fix: transform lambda edge response headers to lower case

CodeGenieApp · Jan 15, 2021 · 922fec0 · 922fec0
1 parent 079e5e4
commit 922fec0
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/event-sources/aws/lambda-edge.js b/src/event-sources/aws/lambda-edge.js
@@ -44,12 +44,13 @@ function getResponseToLambdaEdge ({
 }) {
   const headersMap = {}
   Object.entries(headers).forEach(([headerKey, headerValue]) => {
+    const headerKeyLowerCase = headerKey.toLowerCase()
     // Lambda@Edge fails if you include content-length
-    if (headerKey.toLowerCase() === 'content-length') return
-    if (!headersMap[headerKey]) headersMap[headerKey] = []
+    if (headerKeyLowerCase === 'content-length') return
+    if (!headersMap[headerKeyLowerCase]) headersMap[headerKeyLowerCase] = []
 
-    headersMap[headerKey].push({
-      key: headerKey,
+    headersMap[headerKeyLowerCase].push({
+      key: headerKeyLowerCase,
       value: headerValue
     })
   })